Express NON Service

I ordered items from the US and they informed me that SA post office insisted on express mail because of covid and it costs more. I placed the order and the USPS sent the item in a reasonable time frame. Once it got the SA post of course this is when things go wrong. It took a few days to get through customs, ok fine. Then it goes to Speed Service Couriers and has been there for 10 days, every day the tracking has the same message "Arrival at delivery office" location "ZA90566"

I tried calling the service center for the post office after 30 minutes I hung up. I then went to the post office and they didn't even know what the ZA90566 code meant. So I tried the service center again, they eventually picked up after I don't know how long. They then tell me the parcel is with Speed Service Couriers. I call them and after a few minutes they answer, the person was very rude but ok at least they answered. She informed me that the parcel was with them and would be delivered the next day. That was 2 days ago. I have since tried calling the service center again, sent an email to the support address and tried calling the post office. I gave up after an hour of waiting, tried again and same thing and a third time again. Needless to say they don't answer, don't reply and basically I have recourse since I cant even get hold of someone to find out where I can collect rather than have them deliver. And this service is their express NON service that I paid for!!!!!